Testing Your Sky
... The darkness of the sky as seen from your favorite observing site can be either a help or a hindrance when it comes to observing the night. Under brightly lit conditions you'll not be able to view the fainter objects of the night. What follows is an exercise for determining darkness of the sky, a co ...
... The darkness of the sky as seen from your favorite observing site can be either a help or a hindrance when it comes to observing the night. Under brightly lit conditions you'll not be able to view the fainter objects of the night. What follows is an exercise for determining darkness of the sky, a co ...
Stars - RSM Home
... as the sun (main sequence star) or smaller can be classified as a white dwarf. • A white dwarf is a small, hot dim star that is the leftover center of an old star. • It has no hydrogen left and cannot generate energy any more by nuclear fusion, but it can shine for billions of years before cooling c ...
... as the sun (main sequence star) or smaller can be classified as a white dwarf. • A white dwarf is a small, hot dim star that is the leftover center of an old star. • It has no hydrogen left and cannot generate energy any more by nuclear fusion, but it can shine for billions of years before cooling c ...
Constellations and the Galactic Plane
... ancients to attribute names and stories to. Orion the hunter, Cygnus the swan, Leo the lion are all familiar names to northern hemisphere night sky watchers. There are 88 named constellations, each having numerous stars. This exercise takes you through some of the most recognizable ones in the Octob ...
... ancients to attribute names and stories to. Orion the hunter, Cygnus the swan, Leo the lion are all familiar names to northern hemisphere night sky watchers. There are 88 named constellations, each having numerous stars. This exercise takes you through some of the most recognizable ones in the Octob ...
Lecture 13 - Main Sequence Stars
... • We have been focusing on the properties of stars on the main sequence, but the chemical composition of stars change with time as the star burns hydrogen into helium. • This causes the other properties to change with time and we can track these changes via motion of the star in the HR diagram. ...
... • We have been focusing on the properties of stars on the main sequence, but the chemical composition of stars change with time as the star burns hydrogen into helium. • This causes the other properties to change with time and we can track these changes via motion of the star in the HR diagram. ...
Components of Universe
... What can you see with the naked eye? [outside of the Solar System] - Milky Way stars! (meaning only stars in our own galaxy) i.e., you cannot see any individual stars in any other galaxy;-- they’re just too far and too faint ...
... What can you see with the naked eye? [outside of the Solar System] - Milky Way stars! (meaning only stars in our own galaxy) i.e., you cannot see any individual stars in any other galaxy;-- they’re just too far and too faint ...
CONSTELLATIONS OF THE SOUTHERN SKY VOLANS
... Created by Bayer in 1603, this constellation used to be called PiscisVolans, the Flying Fish, before it was shortened to Volans. Volans was one of the 12 new constellations introduced at the end of the 16th century by the Dutch navigators Pieter Dirkszoon Keyser and Frederick de Houtman. Volans repr ...
... Created by Bayer in 1603, this constellation used to be called PiscisVolans, the Flying Fish, before it was shortened to Volans. Volans was one of the 12 new constellations introduced at the end of the 16th century by the Dutch navigators Pieter Dirkszoon Keyser and Frederick de Houtman. Volans repr ...
Nebula - NICADD
... • Local concentrations in a nebula can be compressed by gravity. – Keeps together at low temperature – Contracts to form centers and radiates energy ...
... • Local concentrations in a nebula can be compressed by gravity. – Keeps together at low temperature – Contracts to form centers and radiates energy ...
Star Types - University of Massachusetts Amherst
... Parallax would be easier to measure if 1) the stars were further away. 2) Earth's orbit were larger. 3) Earth moved backwards along its orbit. 4) none of these. ...
... Parallax would be easier to measure if 1) the stars were further away. 2) Earth's orbit were larger. 3) Earth moved backwards along its orbit. 4) none of these. ...
Document
... years, the star runs out of hydrogen in its core. The core becomes unstable and contracts, while the outer shell starts to expand. ...
... years, the star runs out of hydrogen in its core. The core becomes unstable and contracts, while the outer shell starts to expand. ...
The Milky Way
... bright it looks from Earth, you can determine how far away it must be to look that faint. • For any star in the sky, we KNOW: – Apparent Magnitude (m) – Spectral Type (O, B, A, F, G, K, M) – Luminosity Class (Main Sequence, Giant, etc…). These are denoted by a roman numeral (V, III, I,…). ...
... bright it looks from Earth, you can determine how far away it must be to look that faint. • For any star in the sky, we KNOW: – Apparent Magnitude (m) – Spectral Type (O, B, A, F, G, K, M) – Luminosity Class (Main Sequence, Giant, etc…). These are denoted by a roman numeral (V, III, I,…). ...
Name the eight planets in order by increasing distance from the sun:
... 8-Which of the geocentric, heliocentric models of our solar systems shows the sun as the center of our solar system? A: heliocentric 9-Which of the geocentric, heliocentric models of our solar systems do we support today? A: heliocentric 10-What are the four main components that make up our solar sy ...
... 8-Which of the geocentric, heliocentric models of our solar systems shows the sun as the center of our solar system? A: heliocentric 9-Which of the geocentric, heliocentric models of our solar systems do we support today? A: heliocentric 10-What are the four main components that make up our solar sy ...
Superwind - The University of Sydney
... The team includes scientists from the Universities of Manchester, Sydney, ParisDiderot, Oxford and Macquarie University, New South Wales. They used the Very Large Telescope in Chile, operated by the European Southern Observatory. At the resolution used by the scientists, one could, from the UK, dist ...
... The team includes scientists from the Universities of Manchester, Sydney, ParisDiderot, Oxford and Macquarie University, New South Wales. They used the Very Large Telescope in Chile, operated by the European Southern Observatory. At the resolution used by the scientists, one could, from the UK, dist ...
Ursa Minor
Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.